File Descriptor Record Fixed Segment
TABLE 4.1 SAR DATA FILE - FILE DESCRIPTOR RECORD
(FIXED SEGMENT) DEFINITION
FIELD BYTES FORMAT DESCRIPTION CONTENT
1 1-4 B4 Record sequence number (1 )
2 5 Bl 1-st record sub-type code (63)
3 6 Bl Record type code (192)
4 7 Bl 2-nd record sub-type code (18)
5 8 Bl 3-rd record sub-type code (18)
6 9-12 B4 Length of this record (10012)
7 13-14 A2 ASCII/EBCDIC flag A$
8 15-16 A2 blanks $$
9 17-28 A12 Format control document ID for this data file format CEOS-SAR-CCT
10 29-30 A2 Format control document revision level $A
11 31-32 A2 File design descriptor revision letter $A
12 33-44 A12 Generating software release and revision level <.....>
13 45-48 I4 File number $$$2
14 49-64 A16 File name ERS1.SAR.FDCIMGY
15 65-68 A4 Record sequence and location type flag FSEQ
16 69-76 I8 Sequence number location $$$$$$$1
17 77-80 I4 Sequence number field length $$$4
18 81-84 A4 Record code and location type flag FTYP
19 85-92 I8 Record code location $$$$$$$5
20 93-96 I4 Record code field length $$$4
21 97-100 A4 Record length and location type flag FLGT
22 101-108 I8 Record length location $$$$$$$9
23 109-112 I4 Record length field length $$$4
24 113 Al Reserved <$...$>.
25 114 Al Reserved <$...$>
26 115 Al Reserved <$...$>.
27 116 Al Reserved <$...$>
28 117-180 A64 Reserved segment <$...$>.
File Descriptor Record Variable Segment
TABLE 4.2 SAR DATA IMAGERY OPTIONS FILE FILE DESCRIPTOR RECORD CONTENT
VARIABLE SEGMENT
FIELD BYTES FORMAT DESCRIPTION
29 181-186 I6 Number of SAR DATA records (6300)
30 187-192 I6 SAR DATA record length (bytes) (10012)
31 193-216 A24 Reserved (blanks) <$...$>
SAMPLE GROUP DATA
32 217-220 I4 Number of bits per sample $$16
33 221-224 I4 Number of samples per data group (or pixels) $$$1
34 225-228 I4 Number of bytes per data group (or pixel) $$$2
35 229-232 A4 Justification and order of samples within data group $$$$
SAR RELATED DATA IN THE RECORD
36 233-236 I4 Number of SAR channels in this file &&&1
37 237-244 I8 Number of lines per data set $$$$6300
38 245-248 I4 Number of left border pixels per line $$$0
39 249-256 I8 Total number of data groups per line per SAR channel $$$$5000
40 257-260 I4 Number of right border pixels per line $$$0
41 261-264 I4 Number of top border lines $$$0
42 265-268 I4 Number of bottom border lines $$$0
43 269-272 A4 Interleaving indicator BSQ$
RECORD DATA IN THE FILE
44 273-274 I2 Number of physical records per line $1
45 275-276 I2 Number of physical records per multi-channel line $$
46 277-280 I4 Number of bytes of prefix data per record $$$0
47 281-288 I8 Number of bytes of SAR data (or pixel data) per record $$$10000
48 289-292 I4 Number of bytes of suffix data per record $$$0
49 293-296 A4 reserved <$...$>.
50 297-304 A8 reserved <$...$>
51 305-312 A8 reserved <$...$>.
52 313-320 A8 reserved <$...$>
53 321-328 A8 reserved <$...$>.
54 329-336 A8 reserved <$...$>
55 337-340 A4 reserved <$...$>.
56 341-368 A28 blanks <$...$>
57 369-376 A8 reserved <$...$>.
58 377-384 A8 reserved <$...$>
59 385-392 A8 reserved <$...$>.
60 393-400 A8 reserved <$...$>
61 401-428 A28 SAR Data format type identifier UNSIGNED$INTEGER
62 429-432 A4 SAR Data format type code UI2$
63 433-436 I4 Number of left fill bits within pixel $$$0
64 437-440 I4 Number of right fill bits within pixel $$$0
65 441-448 I8 Maximum data range of pixel $$$63535
Data Record
TABLE 4.3 IMAGERY OPTIONS FILE - PROCESSED DATA RECORD
DEFINITION
FIELD BYTES FORMAT DESCRIPTION CONTENT
1 1-4 B4 Record sequence number (n)
2 5 Bl 1-st record sub-type code (50)
3 6 Bl Record type code (10)
4 7 Bl 2-nd record sub-type code (31)
5 8 Bl 3-rd record sub-type code (50)
6 9-12 B4 Length of this record (10012)
7 13-14 B2 first sample of image line (n)
8 15-16 B2 second sample of image line (n)
. ..... .. ............................ ..........
5006 10011-10012 B2 last sample of image line (n)